| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
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| 10/05/1999 | US5961747 Tin-bearing free-machining steel |
| 09/30/1999 | WO1999049093A1 Steel material and method for its manufacturing |
| 09/30/1999 | WO1999049092A1 Iron-based magnetic shape memory alloy and method of preparing the same |
| 09/30/1999 | CA2325474A1 Iron-based magnetic shape memory alloy and method of preparing the same |
| 09/28/1999 | US5958332 Cylinder member and nickel-based facing alloys |
| 09/28/1999 | US5958158 Causing uniform temperature distribution within steel by controlled heating or cooling after deforming preheated steel then reheating to below deformation temperature and continuously rolling to reduce to final size; simplification |
| 09/22/1999 | EP0943693A1 A method of soft annealing high carbon steel |
| 09/22/1999 | CN1045214C Method and apparatus for heat-treating profiled rolling stock |
| 09/21/1999 | US5953969 Screwdriver, screwdriver bit or the like |
| 09/15/1999 | CN1228871A Metallic glass alloys for mechanically resonant marker surveillance systems |
| 09/14/1999 | US5951789 Excellent in cold workability, inexpensive on account of relatively low nickel content, and suitable for use as exhaust valves of automotive engines |
| 09/07/1999 | US5949838 Manufacture of materials and workpieces for components in nuclear plant applications |
| 09/07/1999 | US5948182 Low cost, high temperature resistant steel comprising iron, carbon, silicon, manganese, nickel, chromium, titanium, aluminum; bolts, turbines, engines, heaters, nuclear reactors |
| 09/03/1999 | WO1999049094A1 Stainless steel |
| 08/31/1999 | US5945067 Containing nickel, chromium and molybdenum; age hardening, chemical resistance, oil repellent |
| 08/31/1999 | US5944922 Highly tenacious ferritic heat resisting steel |
| 08/31/1999 | US5944921 Martensitic stainless steel having high mechanical strength and corrosion resistance and relative manufactured articles |
| 08/31/1999 | US5944917 Stainless steel for ozone added water and manufacturing method thereof |
| 08/31/1999 | CA2137744C Steel for carburized gear |
| 08/25/1999 | EP0937782A2 Martensitic stainless steel having oxide scale layers and method of manufacturing the same |
| 08/25/1999 | EP0793733B1 Method of manufacturing a cylinder member and nickel-based facing alloys |
| 08/19/1999 | WO1999041422A1 Corrosion resisting steel and corrosion resisting oil well pipe having high corrosion resistance to carbon dioxide gas |
| 08/12/1999 | WO1999040594A1 Amorphous alloy with increased operating induction |
| 08/12/1999 | CA2320084A1 Amorphous alloy with increased operating induction |
| 08/11/1999 | EP0935007A1 Cobalt-free and titanium-free maraging steel |
| 08/11/1999 | EP0934579A1 Magnetostrictive element for use in a magnetomechanical surveillance system |
| 08/10/1999 | US5935352 Process for production of a steel component |
| 08/10/1999 | US5935346 Magnetic component of soft magnetic alloy is annealed at a temperature below curie point of the alloy in a direct or undirect current, unidirctional, longitudinal or transverse magnetic field, forming a magnet of desired hysteresis loop |
| 08/05/1999 | WO1999039017A1 Advanced case carburizing secondary hardening steels |
| 08/03/1999 | US5932170 Apparatus for the treatment of metallic workpieces |
| 07/28/1999 | CN1044388C Method for mfg. stainless steel sheet of high corrosion resistance |
| 07/27/1999 | CA2152216C Corrosion-resistant metallic porous member and method of manufacturing the same |
| 07/22/1999 | WO1999036584A1 Free-machining martensitic stainless steel |
| 07/22/1999 | CA2318408A1 Free-machining martensitic stainless steel |
| 07/21/1999 | EP0930374A1 Production of cold working tool steel |
| 07/14/1999 | EP0928834A1 Furnace atmosphere dew point control |
| 07/07/1999 | CN1222106A Cutting die and method of forming |
| 07/01/1999 | WO1999032837A1 Process components, containers, and pipes suitable for containing and transporting cryogenic temperature fluids |
| 07/01/1999 | WO1999032682A1 Austenitic stainless steel including columbium |
| 07/01/1999 | WO1999032672A1 Ultra-high strength steels with excellent cryogenic temperature toughness |
| 07/01/1999 | WO1999032670A1 Ultra-high strength ausaged steels with excellent cryogenic temperature toughness |
| 07/01/1999 | CA2316332A1 Austenitic stainless steel including columbium |
| 06/30/1999 | EP0925379A1 Age hardenable alloy with a unique combination of very high strength and good toughness |
| 06/29/1999 | US5916388 Method and apparatus for the treatment of stainless steel surfaces |
| 06/24/1999 | WO1999031631A1 Multi-thread re-entrant marker with transverse-anisotropy flux concentrators |
| 06/24/1999 | WO1999031282A1 Cold drawn wire and method for the manufacturing of such wire |
| 06/24/1999 | CA2312968A1 Multi-thread re-entrant marker with transverse-anisotropy flux concentrators |
| 06/23/1999 | CN1220706A Polishing-finished stainless steel sheet having excellent stain removability, and production method thereof |
| 06/16/1999 | CN1043670C Nanocrystalline alloy having excellent pulse attenuation characteristics, its use and method of producing same |
| 06/16/1999 | CN1043663C Precipitation hardened ferrous alloy with quasicrystalline precipitates |
| 06/15/1999 | US5911840 Process for manufacturing a magnetic component made of an iron-based soft magnetic alloy having a nanocrystalline structure |
| 06/10/1999 | DE19854726A1 Method for heat treatment of steel |
| 06/02/1999 | EP0804622B1 Method for heat treatment of stainless steel |
| 06/02/1999 | EP0771366B1 Martensitic stainless steel having excellent hot workability and sulfide stress cracking resistance |
| 06/01/1999 | US5908486 Are strengthened and ductility retained by atomization of a metal melt under cover of an inert gas with added oxygen to form approximately 8 nanometer-size hollow oxides within the alloy grains and, when the alloy is aged, strengthened by |
| 05/27/1999 | WO1999025891A1 Tin-bearing free-machining steel |
| 05/19/1999 | EP0648853B1 Non-heat-treated steel for hot forging, process for producing non-heat-treated hot forging, and non-heat-treated hot forging |
| 05/18/1999 | US5904787 Wire for springs of steel |
| 05/06/1999 | EP0912270A1 Method for producing axially symmetric parts and the article |
| 05/05/1999 | CN1216073A Martensitic-Austentitic steel |
| 05/04/1999 | US5900076 Bainitic steel materials having a less scattering of properties and method of producing the same |
| 05/04/1999 | US5900075 Ultra high strength, secondary hardening steels with superior toughness and weldability |
| 04/28/1999 | CN1215091A High hardness powder metallurgy high-speed steel article |
| 04/21/1999 | EP0909829A2 High hardness powder metallurgy high-speed steel article |
| 04/21/1999 | EP0909437A1 Semi-hard magnetic elements formed by annealing and controlled oxidation of soft magnetic material |
| 04/21/1999 | EP0909339A2 Method for processing billets from multiphase alloys and the article |
| 04/21/1999 | CN1214374A Surface metallurgical technology to precipitate hardened stainless steel |
| 04/21/1999 | CN1214368A Method of complete bainite hardening of steel |
| 04/14/1999 | EP0907957A1 Metallic glass alloys for mechanically resonant marker surveillance systems |
| 04/14/1999 | EP0907939A1 Annealing magnetic elements for stable magnetic properties |
| 04/14/1999 | EP0907758A1 Martensitic-austentitic steel |
| 04/14/1999 | CN1213701A Production method of heat-treated member |
| 04/08/1999 | WO1999016921A1 Steel for oil well pipes with high wet carbon dioxide gas corrosion resistance and high seawater corrosion resistance, and seamless oil well pipe |
| 04/07/1999 | CN1213005A Process for manufacturing strip made of alloy of iron-nickel type from continuously cast thin strip |
| 04/06/1999 | US5891270 Heat-treatment of glassy metal alloy for article surveillance system markers |
| 04/01/1999 | WO1999016088A1 Metallic glass alloys for mechanically resonant marker surveillance systems |
| 03/31/1999 | EP0905263A1 Process for manufacturing iron-nickel alloy strip from a continuously cast thin strip |
| 03/31/1999 | EP0904154A1 Comminuting media comprising martensitic/austenitic steel containing retained work-transformable austenite |
| 03/30/1999 | US5888449 Stainless steel |
| 03/25/1999 | WO1999014384A1 Methods for producing constituent members made of ageing-sensitive steel and coated with baking enamel |
| 03/23/1999 | US5885370 Passing heat treated steel at or lower than curie temperature through strong magnetic field gradient to effect phase transformation |
| 03/23/1999 | CA2125540C Stainless steel wire product |
| 03/18/1999 | WO1999013114A1 Pitting resistant duplex stainless steel alloy with improved machinability |
| 03/18/1999 | CA2297670A1 Pitting resistant duplex stainless steel alloy with improved machinability |
| 03/11/1999 | WO1999011828A1 Method for reducing the resistivity of the corrosion-induced oxide layer, and applications |
| 03/10/1999 | EP0900851A1 Production method of a heat-teated steel member |
| 03/10/1999 | EP0900850A2 Heat-treated steels with optimized toughness |
| 03/04/1999 | WO1999010899A1 Continuous transverse magnetic field annealing of amorphous material used in an eas marker and amorphous material composition |
| 03/04/1999 | DE19738405A1 Verfahren zur Herabsetzung korrosionsbedingter Oxidwiderstände auf Chromstahl-Bauteilen und Anwendungen des Verfahrens A method of reducing corrosion related Oxidwiderstände on chrome steel components and applications of the method |
| 03/03/1999 | CN1209464A High-toughness thermo-resisting steel, turbine rotor and mfg. method therefor |
| 03/02/1999 | US5876521 Ultra high strength, secondary hardening steels with superior toughness and weldability |
| 03/02/1999 | US5875636 Process for the cryogenic treatment of metal containing materials |
| 02/25/1999 | WO1999009229A1 Austenitic stainless steel with resistance to deterioration by neutron irradiation |
| 02/23/1999 | US5873956 Case hardened stainless steels; corrosion resistance, rolling fatigue strength, wear resistance |
| 02/23/1999 | US5873954 Amorphous alloy with increased operating induction |
| 02/18/1999 | WO1999007902A1 Metallurgical method for processing nickel- and iron-based superalloys |
| 02/17/1999 | EP0896638A1 Stainless steel alloy for pulp refiner plate |
| 02/11/1999 | WO1999006602A1 Austenitic stainless steel strips having good weldability as cast |
| 02/10/1999 | EP0896068A1 Bainite hardening |
| 02/10/1999 | EP0828862B1 Martensitic stainless steel having high mechanical strength and corrosion resistance and relative manufactured articles |